Apparatus for aerating liquids



Ap 7, 1931. M. A. GUGGENBUHL APPARATUS FOR AERATING LIQUIDS Filed April 18, 1928 2 SheetsSheet l 9 7 iii M. A. GUGGENBUHL APPARATUS FOR AERATING LIQUIDS April 7, 1931.

Filed April 18, 1928 2 Sheets-Sheet 2 Patented Apr. 7, 1931 UNITED STATES PATENT. OFFICE,

MAX AUGUST GUGGENBI'I'IHL, or zonrcn, SWITZERLAND APIARATUS FOR AERATING LIQUIDS Application filed April 18, 1828, Serial No.-271,019, and in Germany July 2, 1927.

The object of the present invention is to provide efficient and convenient means for aerating liquids, for instance in the manufacture of soda-water for hotels and home use, and the invention consists in the provision of a vessel having in its lower part a gas difluser as well as a delivery valve, and in its upper part an inlet for the liquid and a hand-operated pressure-relieving valve,

means being provided for a ready attachment of the vessel to a pipe for charging it with liquid and to a container for supplying compressed gas to the diffuser.

Figs. 1 and 2 of the accompanying drawings represent elevations at right angles to each other of one form of the apparatus,

Fig. 3 is a vertical section of the lower part of the apparatus,

Fig. 4, a sectional View of the lieving valve, and

Fig. 5, a View, partly in section, of a modified form of the apparatus.

The apparatus consists of a tall, preferably bottle-shaped metal vessel 1 provided with a gauge class 2 and with a detachable neck piece 5. Connected to the lower part of the vessel is a three-way cook 18 which can be set in communication either through a pipe 17 with a gas diffuser mounted on the bottom 0 inside the vessel, or through a pipe 28 with the gas space in the upper part of the vessel.

On the upper part of the vessel, close to the neck 3, there is a valve 6 which can be connected by means of a union 7 to a pipe 8 for feeding liquid into the vessel. There is also a valve 9 which communicates with the gas space of the vessel for relieving the pressure. This latter valve comprises a base 14 which forms a seat for the valve cone 13 and which is surmounted by a casing 16 wherein the valve stem 12 and the valve spring 10 are guided. The valve cone is forced against its seat partly by the spring 10 and partly by the internal gas pressure. The stem 12 is fitted with a knob 11 whereby the valve can be depressed for relieving the pressure of the gas which then escapes through apertures 16 in the casing 16.

The three-way cook 18 is adapted to receive a union 20 which is clamped to it by pressure-re- 7 means of a lever 19 and whichconnects it through a pipe 21 with a fiask orthe like containing gasunder pressure. For aerating the liquid in the vessel, the cock plug 27 is turned from the position shown in Fig. 3 in the direction of the'arrow so as to set the gas flask in communication with the pipe 17 through the duct 25 of the plug. The gas supplied throughv the pipe 17 is diffused through ducts 24 over the bottom of the vessel. A grating 22 through which the gases must pass, promotes the difli'usion and causes the liquid to be aerated in a very short time. Inorder to effect a particularlyrapid saturation of the liquid withthe gas, the pressure in the--vessel may be relieved so as to allow the gas bubbles to expand and increase their contact area. This is effected by an intermittent depression of the valveknob 11.

The diifuser is provided with a check valve 23 which closes as soon as the pressure from the directionof the fiask is relieved,

. The aerated liquid is delivered through a pipe 31 fitted with a valve 32 .which is operated by means of a handle 33. The pipe 31 carries a union 34 to which the spout 30 of a. siphon bottle 29 may be connected for filling the latter from the vessel. When the apparatus isused'in this manner for charging siphon bottles, the three-way cock is set as shown in Fig. 3 so as to connect the gas flask with the gas space or the vessel 1. Bythis means the pressure inthe-vessel will remain constant and the liquid willremain fully saturated with gas .until the supply is exhausted. Owing-to the higher pressure thus maintained, moreover, less bottle space will be wanted and a strongly aerated liquid will be obtained. I

In the form of the apparatus just described, a manometer 4 is connected to the neck-piece 5. Fig. 5 shows a modification wherein the manometer is situated just below the neck 42 of a vessel 35. A pressure-relieving valve 41 is mounted on the neck of the vessel. Just as in the former construction, the valve comprises a base 48 which serves as a seat for the valve cone 47 and which is surmounted by a casing 49 containing a valve spring 43. The

gas escapes through one or more ducts 49. The valve cone 47, which is depressed by means of a knob 46, carries a rod 44: which extends towards the bottom of the vessel and which is provided with a. plurality of spaced, perforated discs 45 situated normally under the head of the liquid. When the valve is depressed for relieving the pressure, the discs 45 participate in the movement and agitate the liquid so as to expel any air contained therein and bring about a complete saturation of the liquid with gas. In other respects the apparatus is identical with the one previously described. It has a delivery valve 36 and a three-Way cock 39 which latter supplies gas through a pipe 38 to the diffuser and through a pipe 40 to the gas space.

The filling of the vessel can, if desired, be effected through the neck for which purpose the neck-piece is removed. The neck also serves for the introduction of syrups into the Vessel when syrupy liquid is to be supplied.

In the case of hotels and the like, the apparatus has the advantage that the storage of siphon bottles will be obviated and that a supply of quite fresh aerated water can be continually kept up.

Vhile the elongated bottle shape is convenient for the handling and the transport of the vessel, other forms may be adopted if required. r

The perforated discs 45 may be replacedby other forms of heaters, for instance vanes of metal plate or wire netting.

I claim:

1. An apparatus for aerating liquids comprising an elongated'vessel, an inletvalve and a hand-operated pressure relieving valve communicating with the upper part of the vessel, a delivery valve at the lower part of the vessel, a gas diffuser situated within the lower part of the vessel, a threeu'ay cock adapted to communicate either with said diiiuser or with the gas space in the upper part of the vessel, means for connecting said three-Way cock to a gas supply, an agitating device arranged in the liquid space of the vessel, and a handoperated, spring controlled rod passing through the head of the vessel and connected to said agitating device for operating the latter.

2. A device as claimed in claim 1 wherein the pressure relieving Valve is connected to the rod so as to be opened when the agitating device is operated.

MAX AUGUST GUGGENBUHL. 

